Transmission-gearing.



F. KAWELL.

TRANSMISSION GEARING.

APPLICATION FILED FEB. I 1918.

A1,291,542. Patented t1311.111919.

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@Mot/Maia F. KAWELL.

TRANSMISSION BEARING.

APPLICATION FILED FEB. I. 19IB.

1,291,542. Patented fm1/1,1919,

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.FRED KAWELL, OF MANKATO, MINNESOTA.

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To all whom it 'may concern:

Be it known that 1, Fano KAwnLL, a citizen of the United States, residing at Mankato, in the county of Blue Earth and State of Minnesota, have invented new and useful Improvements in Transmissi on-Gearings, 1 of which. the following is a specification.

This invention relates to transmission gearings and in the preferred embodiment thereof gears of the bevel friction type are employed.

The object of the invention is to provide in connection 'with a driving shaft and a driven shaft disposed in perpendicular relation to each other, beveled gears mounted upon said shafts .and having frusto-conical coacting faces, together with novel means for shifting said gears in relation to cach other to vary the ratio of speed between the driving shaft and driven shaft. The gearing hereinafter particularly described is designed especially for use in transmitting motion from the lengine of a motor vehicle to the driving wheelsthereof but it will be apparent as the description proceeds that the said transmission mechanism may be used in other connections and for various purposes which will suggest themselves to the manufacturer.

With the above and other objects in view,v

the invention consists in the novel construction, combination and arrangement-of parts,

herein described, illustrated and claimed.

ln the accompanying drawings Figure l is a. plan view of the transmission gearing showing the gears thereof ar- 4 is a section in line with the driven said sections being provided with a pin 4' orl the equivalent thereof which is movable lengthwise yof a longitudinal slot 5 in the other membenths -leimz done in order tn'- Specication of Letters Patent.

llatented Jan. 1d, 1919.

application med February i, 191e. serial No. 214,964.

the frafne '1. is a frusto-conial friction gear,

8. Mounted upon the shaft 6 are two oppo1 the gear 8 in `opposite directions. 10' represents an i'dle friction gear corresponding in shape and formation with the driving gear 8.

The gear 10 is mounted upon the shaft 11 suitably journaled in the frame 1, the shaft 11 being in line with the shaft 2 and being .longitudinally shiftable.

A sleeve 12 surrounds the shaft 2 and is slidable through the frame 1 and is held from moving longitudinally upon the shaft 2 by means of a collar 13 fastened to the shaft 2 by means of a set screw 14. The shaft 2 is freely rotatable inthe sleeve 12 but when the sleeve 12 is shifted by means hereinafter described, it operates to impart a corresponding longitudinal movement to the shaft 2. A gear 15 is feathered to the sleeve 12 by means of a pin or key 1G which enters and works in a longitudinal slot 17 in the sleeve 12, this being dono in order to admit of the sliding of the sleeve l2 with the shaft 2 through the gear 15 in order to advance and retract the driving gear 8.

The shaft 11 is surrounded by a sleeve 18 which is held from moving longitudinally of the shaft 11 by a collar 19 secured in place thereon by a set screw 20. The sleeve 18 is slidablc longitudinally through the frame, carrying with it the shaft 11 which is freely rotatable in said sleeve 18. A gear 21 is feathered to the sleeve 18 by means of a pin 22 which enters and works in the longitudinal slot 23 in the sleeve 18. The gears 15 and 21 mesh with and are actuated by other f gears 24 and 25 on a countershaft 26. By

turning the shaft 26 by means of any manually controlled device, both of the gears 15 .and 2l are simultaneously turned for the purpose of advancing and retracting the vgears 8 and 10.

The 'means for shifting theqgears onm- ,2.70 y sitely facing bevel lrictron'gears t) vdriven by' prises three bell crank levers 27, 28 and 29 each being mounted ,on a pivot 30 supported at its opposite ends by the top and bottoni cover plates 31 and 32 for the traine l. One of the bell crank levers is connected to an internally threaded runner or nut 33 by means of a pin 3l projecting from said runner and working' in a slot 85 in said levei.

The runner is engaged by threads 36 on the sleeve 12 and therefore as .said sleeve is turned by the gears 15 and 25, the gear 8 is either advanced or retracted according to the direction in which the sleeve 12 is turned, it being ui'ideistood that the runner or nut 36 is held `from moving -by the bell crank lever 28 which is in turn 4held from moving by a gear shifting rod 37, which/may connect with a lever or other manual controlling device within reach of the operator.

In like manner the lever 29 is formed with a longitudinal slot 38 which receives a pin 9 extending Atrom a nut or ruimer .40 engaging threads .l1 on the sleeve 18 hereinabove described. lVhen the lever 2S is held from movement` the lever 29 -is also held from movement as it is connected with the lever 2S by means to be described.

Each of the gears 9 is mounted upon a sleeve 42 and the latter in turn surrounds another sleeve 43 which in turn surrounds the driven shaft G. The outer ends of the sleeve i3 are t'ormcd with clutch faces eti adapted to be engaged by clutches and i6 slidable on the shaft 6 and feathered thereto by means of kevs or pins -l' which work in slots 48 in said clutches. Any suitable means may be employed tor shifting the` clutch members +15 and 46. ils the gears 9 are siinul-` taneously driven in opposite directions by cooperation with the driving gear 8, it will be understood that b v throwing the clutch member 45 into engagement with the adja- `cent clutch face #fl-t. the shaft Gwill` be driven in one direction, and when the other clutch member i6 is thrown into engagement with the adjacent clutch tace, -l-Jf. the shait will lbe driven in the opposite direction. This'pio vides for reversing the direction of travel of the vehicle in conjunction with which the transmission mechanism is used.

lilaeh of theI bell crank levers 2i', 28 and 2S) is connected to the sleeves l2 by means ot a bearing 5l which surroiindssleeve lf2 troni which pin t9 projects and works in a longitudinal slot 5() in the adjacent arm of each lever. Each ot the 'l'iearings 51 is rheld in place by a collar or shoulder 52 and a set screw 53. lt will now be apparent that when. the bell crank levers 2i', 2S and 29 are rocked on their pivotal connection with the traine. as the sleeves 12 and lS'are shifted inwardly, for example, the sleeves 4:2 are shifted outwardly or away from each other, and when the sleeves i2 and 1S are shifted away `from each other, the sleeves i2 are shifted toward each other. In this Way the gears 8, 9 and 10 may move from the low speed position shown in Fig. 3 to the high speed position shown'in Fig. 1 oi' vice versa oi" they may move to an interniediate posi tion to give other speed ratios.

lt will be understood from the foregoing description taken in connection with the ac coni-panying drawings that the main gear shifting movement is effected by means of the sliittingrod 37 which may be controlled vmeans of the shifting rod 3T, the gears may be quickl)Y shifted to another speed through the medium ot' the bell crank levers 27, 28 and 29. it being understood that there is nothing to prevent the tree. sliding movenient ot' they sleeves l2 and 1S and also the sleeves l2 through the frame 1.

The pins 3l. 39 and lf) work in grooves 54 and inthe cover plates 31 and The grooves 5l and go only partly through the cover plates 31 and 32. This is done so that the pins 3l, 239 and i9 cannot work through the cover. plates 31 and 32. rl`he gears 8. 9 and l() may be transposed if need be, as it gives: the driven gears more speed than the driving gear; that is, the gears 8 and 10 may be tast to sleeves 42 and the gears 9 may be fast to shafts 2 and 11.

lt claim:-

1. In variable speed transmission gearing,l

As soon as said gears are out of.

shaft, means for throwing either one of` said driven gears into clutched engagement with the driven shaft, and means for simultaneously 'advancing and retracting said 1iriving and driven gears to vary the ratio of speed between the driving and driven shafts.

ln variable speed transmission gearing, the combination of a driving shaft, a driven sha tt. a driving gear mounted on and actuated by the driving shaft, driven gears co operating with said driving gear mounted upon and adapted to actuate the driven shaft, means for throwing either .one of said driven gears into clutched engagement with the driven shaft, and means for simultaneously advancing and retraeting said.

' of speed between the driving and driven shafts, said means comprising three bell crank levers controlled by a shiftin rod and controlling the driving and driven gears.

3. In variable speed transmission gearing, the combinationof a driving shaft, a driven shaft, a driving gear mounted on and actu' ated by the driving shaft, driven gears cooperating with said drivin gear mounted upon and adapted to actuate the driven shaft, means for throwing either one of said driven gears into clutched engagement with the driven shaft, means for simultaneously advancing and retracting said driving and driven gears to vary the ratio of speed between the driving and driven shafts, an idle gear driven by said'driven gears and arranged in opposition to the driving gear, a shaft on which said idle gear is mounted, and means controlled by a shifting rod for simultaneously advancing and retracting the driving gear and the driven gears.

4. In variable speed transmission gearing, the combination of a driving shaft, a driven shaft, a drivin operating with said driving gear mounted upon and adapted to actuate the driven shaft, means for throwing either one of said driven gears into clutched engagementwith the driven sha-ft, means for simultaneously advancing and retracting said driving and driven gears to vary the ratio of speed between the driving and driven shafts, an idleI 'gear driven by said driven Copies dLthis patent may be obtained for ve cents each, by addressing the ear mounted on and actu- 4 'ated by the driving shaft, driven gears co- 5. In variable speed transmission gearing,`

the vcombination of a driving shaft, a driven shaft, a driving gear mounted on and actuated by tlie driving shaft, 'driven gears cooperating .With said driving gear mounted upon and adapted to actuate the driven shaft, means for throwing either one of said driven gears into clutched engagement with...tlie driven shaft, means for simultaneously advancing and reti-acting said driving and driven gears to vary the ratiol of speed between the driving and driven shafts, an idle gear driven by said driven gears and arranged in opposition to the 'driving gear, a shaft on which said idle gear is mounted, means controlled by a shifting rod for simultaneously advancing and retracting the driving gear and the driven gears, bearing sleeves in which the driving shaft and the shaft of the idle gear @are journaled, gears on said sleeves, a'gear shifting shaft, and gears on the last named shaft meshing with the gears on said bearing sleeves;

In testimony whereof I affix my signature.

FRED KAWELL.

Commissioner ot Patents,

Washington, D. 0. 

